JP2007272510A - Storage controller and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage controller wherein a procedure of a configuration change is not complicated even when a plurality of resources to be reconfigured is present. <P>SOLUTION: A storage device 100 has a plurality of logic storage groups 130, 131 for business, and a logic storage device 500. A configuration change possibility/impossibility management table 110 defines a set of the plurality of resources inside the storage device 100, and stores an attribute of approval/disapproval of the configuration change to the defined set. When a configuration change control means 120 receives configuration change requirement, the configuration change control means 120 decide whether the configuration change of the resource of the configuration change target is permitted or not, in reference to the configuration change possibility/impossibility management table 110. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a storage control apparatus and method, and more particularly to a storage control apparatus and method for controlling a storage whose resource configuration can be changed.

  In a storage apparatus having a plurality of resources, the resources can be dynamically changed, and the configuration of the resources can be arbitrarily changed. However, if the resource configuration change is allowed freely, the configuration change is added to the resource that should be prohibited from being changed due to an erroneous operation by the administrator, and a problem may occur. In order to avoid such a problem, the conventional storage apparatus adopts a configuration in which configuration change permission / non-permission is set for each resource, and the configuration change is permitted only for the permitted resource. .

  As a technique for setting permission / non-permission of configuration change for resources in the storage, there is a technique described in Patent Document 1. In this technology, a storage device, a management console, and a host computer are connected, and the configuration change permission / non-permission attribute is set for each storage device (logical volume) using the management console. When a configuration change is instructed from the host computer, the attribute of the storage device subject to the configuration change is checked. If the configuration change is permitted, the configuration change is performed according to the instruction. By locking resources that are not to be reconfigured and prohibiting configuration changes, it is possible to reduce the risk of configuration changes due to erroneous operations by the administrator.

JP 2002-334048 A

  Here, in order to change the configuration of a locked resource, the resource is unlocked in advance, the configuration is changed, and then the resource is locked again. In the prior art, lock / unlock is individually set for each resource including Patent Document 1, and if there are multiple resources to be changed, this procedure is repeated for a plurality of resources. Become. For example, when performing a storage resource configuration change for a system consisting of multiple host computers, such as database backup linked to the replication function of the storage device, each host computer for database business / backup business A lock / unlock process is required for the resource allocated to. For this reason, there exists a problem that the work procedure for a structure change increases.

  In addition, an increase in the number of resources also increases the possibility of an error in the operation of the administrator's lock or unlock process, in particular, the possibility of an error in forgetting to lock the resource once unlocked. If you forget to lock the resource, the resource remains unlocked, and if the administrator tries to make a configuration change by mistake, the configuration change is allowed. As a result, data due to unauthorized access etc. There is a risk of destruction.

  It is an object of the present invention to provide a storage control apparatus and method that solves the above-described problems of the prior art and that does not complicate the configuration change procedure even when there are a plurality of resources to be changed.

  In order to achieve the above object, a storage control device according to the present invention, in a storage control device that controls a storage device having a plurality of resources, provides a set including two or more resources among the plurality of resources. Configuration change control means for setting permission or non-permission of configuration change of resources belonging to a set is provided.

  In the storage control device of the present invention, two or more resources among a plurality of resources of the storage device are defined as a set, and permission or non-permission of resource configuration change is set for the set. For this reason, by defining resources that are related to each other as a set, it is possible to collectively set permission / non-permission of configuration change for a plurality of related resources that belong to the set. Therefore, even when there are a large number of resources subject to configuration change, the work procedure of the administrator is not complicated, and the risk of erroneous operation can be reduced.

  In the storage control device of the present invention, the configuration change control means associates the set of resources with an attribute of configuration change permission or configuration change disapproval for the set of resources in association with each other. The structure memorized in can be adopted. For example, if it is desired to define a new set, a new entry may be added to the configuration change enable / disable management table. If it is desired to change the configuration change permission / non-permission attribute for an existing set, the configuration change permission / non-permission attribute of the entry corresponding to the set may be changed.

  In the storage control apparatus of the present invention, when the configuration change control unit receives a configuration change request including information for specifying a configuration change target resource, the configuration change control resource refers to the configuration change enable / disable management table and refers to the configuration change target resource. It is possible to adopt a configuration in which the configuration change is performed according to the configuration change request. In this case, it is possible to avoid a situation in which the configuration of a resource that is not permitted to be changed is changed.

  In the storage control device of the present invention, a configuration in which the resource includes a logical storage configured in the storage device can be adopted. Further, it is possible to adopt a configuration in which the resource includes a logical storage group including one or more logical storages.

  The storage control method of the present invention is a storage device control method for changing the configuration of a desired resource in a storage device having a plurality of resources, and for a set including two or more resources of the plurality of resources. The configuration change permission or disapproval of the resources belonging to the set is set, and it is determined whether or not the configuration change of the configuration change target resource is permitted based on the set configuration change permission or disapproval. However, when the configuration change is permitted, the configuration change of the configuration change target resource is performed.

  In the storage control method of the present invention, permission or non-permission of resource configuration change is set for a set including two or more resources of a plurality of resources of the storage device, and the resource that is the target of configuration change is If the configuration change is permitted for the set to which it belongs, the configuration of the resource is changed. In this way, by setting permission / denial of configuration change for a set of resources, it is possible to set permission / non-permission of configuration change for a plurality of resources at a time, and it is a target of configuration change. Even when there are many resources, the work procedure of the administrator is not complicated, and the risk of erroneous operation can be reduced.

  In the storage control method of the present invention, it is possible to adopt a configuration in which a set including the configuration change target resource is set to configuration change permission prior to determining whether the configuration change is permitted. In this case, unintentional resource configuration change is erroneously performed by setting the configuration change permission for the set to which the resource subject to the configuration change belongs, and disallowing the configuration change for other sets. Can be prevented.

  In the storage control method of the present invention, it is possible to employ a configuration in which a configuration including the configuration change target resource is set to a configuration change non-permission after the configuration change. In this case, it is possible to prevent a situation in which the configuration change is performed by an erroneous operation by setting the configuration change not permitted after the configuration change is performed.

  In the storage control apparatus and method of the present invention, permission or non-permission of resource configuration change is set for a set including two or more resources among a plurality of resources of the storage apparatus. This allows configuration change permission / denial for multiple resources in a batch, and even if there are many resources that are subject to configuration change, the administrator's work procedure is not complicated, which may lead to risk of erroneous operations. Can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a configuration of a storage control system including a storage control apparatus according to an embodiment of the present invention. The storage control system 10 includes a storage device 100, business host computers 200 and 201 connected to the storage device 100, and a management host computer 300. The storage apparatus 100, the business host computers 200 and 201, and the management host computer 300 are connected to each other via the network 400.

  The storage apparatus 100 includes a plurality of business logical storage groups 130 and 131, a configuration change availability management table 110, a configuration change control unit 120, and a plurality of logical storage devices 500-1 to 500-n. The logical storage devices 500-1 to 500-n are logical storage devices viewed from the host computers 200, 201, and 300, which are host devices, and are configured on physical storage devices. The business logical storage groups 130 and 131 are a set of logical storage devices 500 defined in the storage device 100, and indicate a logical set representing mapping of connection relations with the host computer.

  A plurality of business logical storage groups 130 and 131 can be defined for each connected host computer in the storage apparatus 100, and access requests from the host computer are access controlled in units of business logical storage groups. Is done. In FIG. 1, the logical storage device 500-1 is associated with the business logical storage group 130. The logical storage device 500-3 is associated with the business logical storage group 131.

  The configuration change availability management table 110 defines a plurality of logical resources (business logical storage groups or logical storages) in the storage apparatus 100 as a set, and collectively manages whether the configuration change is possible in units of the set. It is a table. FIG. 2 shows an example of the configuration change availability management table 110. In the configuration change enable / disable management table 110, an ID, a set name as a primary key of the table, a configuration change enable / disable state for the set, and a list of resources included in the set are registered in association with each other. In the first row of the configuration change availability management table 110 shown in the figure, the set name is “database backup 1”, and the resources included in the set are “business logical storage group 130” and “business logical storage”. The group 131 ”indicates that the configuration change operation is prohibited for the set.

  Returning to FIG. 1, the business host computers 200 and 201 issue an access request to the storage apparatus 100 and receive a result for the request. The management host computer 300 includes a configuration change request unit 310. The configuration change request unit 310 issues a configuration change enable / disable management table update request for requesting the storage device 100 to update the configuration change enable / disable management table 110, and receives a result for the request. Also, a resource configuration change request for requesting a resource configuration change is issued, and a result for the request is received.

  When the configuration change control means 120 in the storage apparatus 100 receives an update request for the configuration change availability management table 110 from the management host computer 300, it updates the configuration change availability management table 110 according to the request. When a resource configuration change request is received from the management host computer 300, it is determined whether or not the requested configuration change is permitted with reference to the configuration change enable / disable management table 110.

  Next, the operation procedure of the storage control system 10 will be described. Here, the business host computer 200 performs database business using the data of the logical storage device 500-1 in the business logical storage group 130, and another business host computer 201 stores data in the business logical storage group 131. Assume that a backup operation is performed using data in the logical storage device 500-3. In addition, it is assumed that the storage replication function is used with the logical storage device 500-1 as a replication source and the logical storage device 500-3 as a replication destination.

  The operation of the storage control system 10 includes two operations: an operation when the management host computer 300 issues a configuration change temporary management table update request to the storage apparatus 100 and an operation when a resource configuration change request is issued. Divided into two. There are two types of configuration change permission management table update requests: (1) new entry creation and (2) lock / unlock setting change. The creation of a new entry is used when a set to be newly managed is defined. The lock / unlock setting change is used to set a lock / unlock configuration change enable / disable state for a defined set.

  FIG. 3 shows an operation procedure when a new entry is created in the configuration change enable / disable management table 110. In creating a new entry, the management host computer 300 issues a configuration change permission management table update request (entry addition request) requesting creation of a new entry to the storage apparatus 100 (step S31). This entry addition request includes information indicating a set name which is a name of a newly added entry, configuration change enable / disable information (locked or unlocked), and a list of resources included in the set.

  When receiving the entry addition request, the configuration change control means 120 in the storage apparatus 100 refers to the configuration change enable / disable management table 110 and already registers an entry having the same set name as the set name included in the received entry addition request. It is checked whether or not it has been performed (steps S32 and S33). If no entry with the same set name exists, a new entry is added to the configuration change enable / disable management table 110 according to the request (step S34), and the process ends. If an entry with the same set name already exists, error processing such as notifying the management host computer 300 of an error is performed (step S35), and the processing is terminated.

  For example, the storage apparatus 100 has an entry having a set name “database backup 1”, a configuration change enable / disable state “lock”, and target resources “business logical storage group 130” and “business logical storage group 131”. Assume that an add request is received. In this case, if the set name “database backup 1” is not already registered in the configuration change availability management table 110, an entry is added to the configuration change availability management table 110 in step S34 (first line in FIG. 2 ( In this example, since the configuration change enable / disable state is “locked”, a new entry is added, so that “business logical storage group 130” and “business logical storage group 131” are added. All of these resources are collectively in a locked state, that is, a state in which configuration change is prohibited.

  FIG. 4 shows an operation procedure of the storage control system 10 when changing the lock / unlock setting in the configuration change enable / disable management table 110. The management host computer 300 issues a configuration change availability management table update request (setting change request) for changing the lock / unlock of the configuration change availability management table 110 to the storage apparatus 100 (step S41). This setting change request includes the set name of the set whose setting is to be changed and the configuration change enable / disable state value to be updated (locked or unlocked).

  When receiving the setting change request, the configuration change control means 120 searches the configuration change enable / disable management table 110 based on the set name included in the received entry addition request (step S42). As a result of the search in step S42, it is determined whether or not there is an entry with the same set name in the configuration changeability management table 110 (step S43). If there is, the value of the configuration changeability status of that entry is acquired. (Step S44). The configuration change control means 120 compares the value of the change enable / disable state after change included in the received setting change request with the value of the configuration change enable / disable state acquired in step S44, and determines whether or not they are different values. Is determined (step S45).

  If the configuration change control unit 120 determines that the two are different in step S45, the configuration change control unit 120 updates the configuration change enable / disable state of the configuration change enable / disable management table 110 with the value included in the setting change request (step S46), and ends the process. In the update in step S46, the value of the configuration change enable / disable state in the configuration change enable / disable management table 110 is changed from “locked” to “unlocked” or from “unlocked” to “locked”. If it is determined in step S43 that no entry exists, and if it is determined in step S45 that the configuration change enable / disable state value is the same, error processing such as error notification is performed (step S47), The process ends.

  For example, it is assumed that the storage apparatus 100 has received a setting change request for a configuration change enable / disable state with the configuration change enable / disable state “unlocked” for the set name “database backup 1”. In this case, if the configuration change availability management table 110 is in the state shown in FIG. 2, it is determined in step S43 that an entry “database backup 1” exists. In FIG. 2, since the value of the configuration change availability status of “database backup 1” is “locked”, it is determined in step S45 that the value of the configuration change availability status included in the setting change request is different from the current value. Is done. Therefore, in step S46, the configuration change availability status of “database backup 1” is updated from “locked” to “unlocked”, and the configuration change availability management table 110 becomes as shown in FIG. As a result, the “business logical storage group 130” and the “business logical storage group 131” are collectively in an unlocked state, that is, a configuration change is permitted.

  FIG. 6 shows an operation procedure of the storage control system 10 when changing the resource configuration. Here, a case where the configuration of a business logical storage group is changed as a resource will be described as an example. Changes in the resource configuration of the business logical storage group include, for example, addition or deletion of logical storage devices belonging to the same business logical storage group, and change of the name of the business logical storage group. In the following, consider the case where a logical storage device is added to a business host computer as the database capacity increases. At that time, since a backup process is also performed by replication, a logical storage device is similarly added to the backup host computer.

  The management host computer 300 issues a resource configuration change request for changing the attribute of the resource in the storage apparatus 100 to the storage apparatus 100 (step S61). This resource configuration change request includes information for identifying the resource that is the target of the resource change and the content of the configuration change. For example, when the logical storage device 500-2 is added to the business logical storage group 130, the name of the business logical storage group 130 that is the resource to be changed and the logical storage to be added are included in the resource configuration change request. And the name of the device 500-2.

  When the configuration change control unit 120 receives the resource configuration change request, the configuration change control unit 120 refers to the configuration change enable / disable management table 110, and the target resource in the table includes the change target resource included in the received resource configuration change request. Is searched (step S62), and it is determined whether or not the corresponding entry exists (step S63). For example, if the resource to be changed is the business logical storage group 130, an entry in which the business logical storage group 130 exists in the target resource of the configuration change availability management table 110 (FIGS. 2 and 5) is searched.

  When the configuration change control means 120 determines that an entry exists, the configuration change control means 120 checks the configuration change enable / disable state of the entry (step S64), and determines whether or not the entry is unlocked (step S65). If the configuration change control unit 120 determines in step S65 that the configuration change control unit 120 is not in the unlocked state, that is, the configuration change is not permitted, the configuration change control unit 120 sends a request to the configuration change request unit 310 on the management host computer 300 that issued the request. Error processing such as error notification is performed (step S68), and the processing is terminated. If it is determined in step S65 that it is in the unlocked state, it is determined whether or not all entries in the configuration change enable / disable management table 110 have been searched (step S66). If not all entries have been searched, the process returns to step S62 to search for the next entry. If the configuration change enable / disable state of all the retrieved entries is the unlocked state, the configuration change is performed according to the request issued in step S61 (step S67).

  When the configuration of the resource “business logical storage group 130” is changed, the configuration change availability state of the set “database backup 1” including “business logical storage group 130” as a target resource is set to an unlocked state in advance ( FIG. 5). In step S62, an entry for the set name “database backup 1” including “business logical storage group 130” in the target resource is searched. In FIG. 5, since the configuration change permission status of the entry “database backup 1” is “unlocked”, it is determined in step S65 that the resource to be changed is unlocked. Returning from step S66 to step S62, the next entry in the configuration change permission / inhibition management table 110 is searched. The target resource of the entry in the “storage logical storage list 1” belongs to the “business logical storage group 130”. Since the logical storage device 500-1 is not included, an entry having “business logical storage group 130” as a target resource is not found. For this reason, the process proceeds from step S63 to step S67, and a configuration change for additionally registering the logical storage device 500-2 in the business logical storage group 130 is performed.

  In the above, the case where a new logical storage device 500-2 is added to the business logical storage group 130 has been described. However, by setting “database backup 1” to the unlocked state, the target resource of “database backup 1” The “business logical storage group 131” included in the table is also unlocked. Therefore, the configuration can be changed by the same procedure as described above. After completing the resource configuration change, the administrator uses the management host computer 300 to change the configuration change enable / disable state of “database backup 1” from “unlocked” to “locked” by the procedure shown in FIG. As a result, the “business logical storage group 130” and the “business logical storage group 131” that are the target resources of “database backup 1” are collectively locked.

  In the prior art, when changing the configuration of a resource, each resource to be changed is set to an unlocked state, and after the configuration change is performed, each resource is set to a locked state. In the prior art, it is necessary to change the locked / unlocked state of a resource for each resource, and it is necessary to repeat it for the number of resources. In this embodiment, a group of resources is defined, and the lock / unlock state can be changed in a group. Therefore, even if the number of target resources increases, lock / unlock operations are performed for each group. Can be performed only once, and the operation procedure of the administrator can be simplified. In addition, since a plurality of resources can be defined as a set, the risk of forgetting to unlock or forgetting to relock after unlocking due to an error in the procedure of the administrator can be reduced.

  In FIGS. 2 and 5, the resource included in the set is specified using the name of the resource, but the present invention is not limited to this. For example, the resource may be specified using other information that can uniquely specify the resource, such as a logical resource number held by the storage apparatus 100.

  Although the present invention has been described based on the preferred embodiment, the storage control apparatus and method of the present invention are not limited to the above embodiment, and various modifications and changes can be made to the configuration of the above embodiment. Those subjected to are also included in the scope of the present invention.

1 is a block diagram showing the configuration of a storage control system including a storage control device according to an embodiment of the present invention. The figure which shows an example of a structure change availability management table. The flowchart which shows the operation | movement procedure at the time of creating a new entry in a structure change management table. 10 is a flowchart showing the operation procedure of the storage control system when changing the lock / unlock setting in the configuration change enable / disable management table. The figure which shows the structure change possibility management table after the attribute change of permission / denial. The flowchart which shows the operation | movement procedure of the storage control system at the time of changing a resource structure.

Explanation of symbols

10: Storage control system 100: Storage device 110: Configuration change availability management table 120: Configuration change control means 130, 131: Business logical storage group 200, 201: Business host computer 300: Management host computer 400: Network 500: Logical storage

Claims (8)

In a storage control device that controls a storage device having a plurality of resources,
A storage control apparatus comprising: a configuration change control unit configured to set permission or disapproval of a configuration change of a resource belonging to the set for a set including two or more resources of the plurality of resources.   The configuration change control means stores the set of resources and a configuration change permission / non-permission attribute for the resource set in association with each other in the configuration change permission management table. The storage control device described.   When the configuration change control unit receives a configuration change request including information for specifying a configuration change target resource, the configuration change control unit refers to the configuration change enable / disable management table and determines whether the configuration change for the configuration change target resource is permitted. The storage control device according to claim 2, wherein the storage control device performs configuration change according to the configuration change request when it is determined whether or not it is permitted.   The storage control device according to any one of claims 1 to 3, wherein the resource includes a logical storage configured in the storage device.   The storage control device according to claim 4, wherein the resource includes a logical storage group including one or more logical storages. A storage apparatus control method for changing a configuration of a desired resource in a storage apparatus having a plurality of resources,
For a set including two or more resources of the plurality of resources, setting permission or disapproval of configuration change of resources belonging to the set,
Based on the set configuration permission or non-permission, it is determined whether or not the configuration change of the configuration change target resource is permitted,
A storage control method characterized by executing a configuration change of the resource to be changed when the configuration change is permitted.   The storage control method according to claim 6, wherein, prior to determining whether or not the configuration change is permitted, a set including the configuration change target resource is set to a configuration change permission.   The storage control method according to claim 6 or 7, wherein after the configuration change is performed, a set including the configuration change target resource is set to a configuration change non-permission.

Images